On 3/9/25 04:14, Holm Tiffe via cctalk wrote:
ben via cctalk wrote:
On 2025-03-08 8:09 a.m., emanuel stiebler via cctalk wrote:
On 2025-03-07 15:36, Holm Tiffe via cctalk wrote:
Hi all,
I'm dreaming to build sometimes my own Bit Slice CPU (when I have
spare time)
and I have collected several IC's in the last years for this purpose.
In about 1982 I built a 32-bit bit slice machine using 8 X
2903 and a 2910 sequencer. I had it set up with 1K of
96-bit wide control store, and it ran 2-address operations
at 8 MHz and 3-address at 6 MHz. See :
http://pico-systems.com/stories/1982.html for some text and
photos.
Unfortunately, I badly underestimated the effort to get a
complete system based on this working and abandoned the
project. I did have a console program that ran on CP/M that
could load microcode, load and examine registers, and start
the micromachine. I then had to build a memory interface
and system bus controller, and add a few small details for
instruction dispatch and instruction fetching optimization.
THEN** I had to figure out some way to get a Pascal compiler
for the 360 architecture and create an OS and utilities. A
big job!
Jon
